Anderson Doors

Castle Windows Replacement Doors with Installation Coverage Under a Lifetime Warranty

We sell and install residential replacement doors, with steel and fiberglass options for front entries, French doors, and patio sliders. Since 1977, our family-owned home improvement company has helped homeowners compare models, colors, finishes, hardware, security priorities, and installation requirements.

If you searched for Anderson Doors while looking for the Andersen brand, note that the brand name is spelled Andersen, with an “e.” This page covers replacement doors sold and installed by Castle Windows rather than making any claim about Andersen products.

Steel & Fiberglass Replacement Entry Doors

We offer legacy textured steel doors and heritage fiberglass doors. Both use a five-step paint finishing system, and our catalog includes different models, colors, and options. Your selection can reflect the home’s architecture, entryway design, weather exposure, maintenance preferences, and security priorities.

Steel Doors
Steel may suit homeowners who prefer its appearance and want to make entry security central to the selection process. Panel design, finish, glass, and hardware should all be considered together rather than treating material as the only decision.

Fiberglass Doors
Fiberglass provides another exterior-door option with its own designs and finishes. During your estimate, we can review the available choices based on your home’s appearance and how your household uses the entrance.

Front Doors, French Doors & Patio Sliders

The right configuration depends on where the door leads, how it needs to operate, and how much floor or wall space is available around the opening. We offer the following replacement door categories:

Hardware also affects everyday access. An optional keypad deadbolt lets users add, change, or delete access codes. We can discuss availability while reviewing the door model and other project requirements.

Door Installation & Long-Term Service Support

We install the replacement doors we sell. A professional installation should address the opening’s condition, door fit, operation, weather sealing, and hardware alignment. These details matter because even a well-selected door needs to work properly within the existing opening.

A Home Improvement Company Serving Families Since 1977

We’ve completed work for more than 1.2 million customers across 11 states. Our longevity matters when a project includes long-term warranty and service commitments. We’ve also received multiple Qualified Remodeler Top 500 designations.

Our customer relationships continue after installation through our service department. That continuity gives homeowners one company for the door purchase, installation, and covered warranty service rather than separating those responsibilities.

Compare Door Options with a Free Estimate

Start by reviewing our door catalog, then talk with us about your existing opening, preferred operation, material, style, finish, hardware, and installation needs. We can prepare a customized estimate based on the replacement door and project scope.